Smart EV Charging & Vehicle-to-Grid
The Megawatt Charging System (MCS) delivers up to 4.5 MW for commercial trucks—a full charge in 30-45 minutes. Combined with Vehicle-to-Grid (V2G) bidirectional technology, electric fleets become mobile grid assets, generating revenue through frequency regulation and peak demand management.
Megawatt Charging System (MCS)
The Megawatt Charging System is a new global standard developed by CharIN e.V. in collaboration with manufacturers including Daimler Truck, DEKRA, and major utilities. Building on Combined Charging System (CCS) foundations, MCS enables the high-power charging necessary for commercial electric transportation.
Why MCS matters: A typical Class 8 electric truck carries 500-1,000 kWh of battery capacity. At 350 kW (today's fastest passenger chargers), a full charge would take 2-3 hours— unacceptable for commercial logistics. MCS at 3.75+ MW reduces this to 30-45 minutes, matching conventional refueling times and enabling practical long-haul electrification.
The HoLa project in Germany is deploying MCS infrastructure at four locations with 750+ kW capability as a first commercial step. Final ISO/IEC/SAE standards were published in 2024-2025, enabling global interoperability at power levels up to 4.5 MW.
Vehicle-to-Grid (V2G) Technology
Vehicle-to-Grid (V2G) transforms electric vehicles from passive loads into active grid assets. With bidirectional chargers, EVs can discharge stored energy back to the grid during peak demand, earning revenue for owners while providing critical grid services.
A 2024 Fraunhofer ISE study for Transport & Environment found that full EV-power-system integration in Europe could provide massive grid flexibility, with each V2G-enabled vehicle potentially earning €500-2,000 annually from grid services alone—offsetting a significant portion of vehicle ownership costs.
For commercial fleets, V2G is particularly valuable: vehicles typically sit idle 12+ hours per day, and their large battery capacities (500+ kWh for trucks vs. 60-100 kWh for passenger cars) provide substantial grid resources. A depot of 50 electric trucks represents 25+ MWh of mobile storage.
Grid Frequency Regulation
EVs respond in milliseconds to grid frequency deviations, providing critical balancing services typically reserved for dedicated power plants.
Peak Demand Reduction
Discharge stored energy during grid peaks to reduce demand charges and earn premium rates, particularly valuable for commercial fleet operators.
Renewable Integration
Store excess solar and wind generation when abundant, discharge when renewable output drops, smoothing intermittency without utility-scale batteries.
Emergency Backup
Fleet vehicles provide backup power for facilities during outages, with a single electric truck storing enough energy to power a home for days.
Commercial Fleet Electrification
Long-Haul Trucking
MCS-enabled highway corridors allow electric Class 8 trucks to recharge during mandatory 30-minute rest breaks, making zero-emission long-haul logistics practical.
Fleet Depots
Overnight depot charging with V2G capability transforms delivery fleets into grid assets, earning revenue during idle hours while ensuring vehicles are ready for morning routes.
Public Networks
Strategic highway charging stations serve multiple fleets, maximizing utilization and accelerating payback on infrastructure investments.
Greco Energy's Approach
Led by Leo Paskalidis, our facilities are positioned along major highway corridors—critical routes for commercial freight. We're designing integrated MCS charging infrastructure powered by our hybrid generation portfolio: clean natural gas, solar, and grid resources.